Do we still need MSDOS support?

[Ethan A M. <sf...@us...>]

A possibly foolish question from someone far outside the DOS/Windows world...

Many places in the gnuplot code are marked
#ifdef MSDOS ...

I thought that MSDOS referred to 16-bit legacy code that we
no longer support.  Maybe I am mistaken.

Who/what needs this code?
Should the test be replaced by a test for _WIN32 instead?

Maybe or maybe not the same question-

Can we get rid of the macros HUGE  and GPFAR?
Can we get rid of GP_FARMALLOC?